Interpretation:
The mass of ethylene glycolrequired to raise the boiling point to 103.9°Cis to be calculated with the help of mass of water and boiling point of the solution.
Concept introduction:
Molality is defined as the total number of moles present in one kilogram of the solvent.
The mass of the solvent should be in kilograms
The temperature at which vapor pressure of a liquid becomes equal to the atmospheric pressure is known as boiling point.
The boiling point elevation is as follows:
Here,
For water:
The actual boiling point of the solution is the sum of boiling point of pure water and boiling point elevation
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Student Solutions Manual for Chemistry
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